/**
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * Author: JianYi, eyjian@qq.com or eyjian@gmail.com
 */
#ifndef INTERGER_UTIL_H
#define INTERGER_UTIL_H
#include <math.h>
#include "util/util_config.h"
UTIL_NAMESPACE_BEGIN

class CIntergerUtil
{
public:	
	template <typename DataType>
	static bool is_prime_number(DataType x)
	{
		if (x < 2)
			return false;

		DataType k = (DataType)sqrt(x);
		for (DataType m=2; m<=k; ++m)
			if (0 == x % m)
				return false;

		return true;
	}
};

UTIL_NAMESPACE_END
#endif // INTERGER_UTIL_H
